Home / 39,172.45-54,057.81-21,267.31

Finding the Fourth Proportional to 39,172.45, 54,057.81 and 21,267.31

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Solution

The fourth proportional to 39,172.45, 54,057.81 and 21,267.31 is: 29,348.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.45 : 54,057.81 = 21,267.31 : x
  2. Step 2: Convert to fraction form
    39,172.45/54,057.81 = 21,267.31/x
  3. Step 3: Cross multiply
    39,172.45x = 54,057.81 × 21,267.31
  4. Step 4: Simplify right side
    39,172.45x = 1,149,664,203.19
  5. Step 5: Solve for x
    x = 1,149,664,203.19/39,172.45
  6. Step 6: Final answer
    x = 29,348.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.